export type RechargeStatus =
  | 'not_paid'
  | 'paid_pending'
  | 'recharging'
  | 'success'
  | 'failed'
  | 'closed';

export interface OrderStatusLike {
  status: string;
  paidAt?: Date | string | null;
  completedAt?: Date | string | null;
}

const CLOSED_STATUSES = new Set([
  'EXPIRED',
  'CANCELLED',
  'REFUNDING',
  'REFUNDED',
  'REFUND_FAILED',
]);

const REFUND_STATUSES = new Set(['REFUNDING', 'REFUNDED', 'REFUND_FAILED']);

function hasDate(value: Date | string | null | undefined): boolean {
  return Boolean(value);
}

export function isRefundStatus(status: string): boolean {
  return REFUND_STATUSES.has(status);
}

export function isRechargeRetryable(order: OrderStatusLike): boolean {
  return hasDate(order.paidAt) && order.status === 'FAILED' && !isRefundStatus(order.status);
}

export function deriveOrderState(order: OrderStatusLike): {
  paymentSuccess: boolean;
  rechargeSuccess: boolean;
  rechargeStatus: RechargeStatus;
} {
  const paymentSuccess = hasDate(order.paidAt);
  const rechargeSuccess = hasDate(order.completedAt) || order.status === 'COMPLETED';

  if (rechargeSuccess) {
    return { paymentSuccess, rechargeSuccess: true, rechargeStatus: 'success' };
  }

  if (order.status === 'RECHARGING') {
    return { paymentSuccess, rechargeSuccess: false, rechargeStatus: 'recharging' };
  }

  if (order.status === 'FAILED') {
    return { paymentSuccess, rechargeSuccess: false, rechargeStatus: 'failed' };
  }

  if (CLOSED_STATUSES.has(order.status)) {
    return { paymentSuccess, rechargeSuccess: false, rechargeStatus: 'closed' };
  }

  if (paymentSuccess) {
    return { paymentSuccess, rechargeSuccess: false, rechargeStatus: 'paid_pending' };
  }

  return { paymentSuccess: false, rechargeSuccess: false, rechargeStatus: 'not_paid' };
}